Gas-burner.



H. SUSSMANN.

I GAS BURNER; APPLICATION FILED NOV. 5,

Patented Oct. 17, 1911,

Q J ATTORNEYS oosoes.

summon sfissi/ieun, on BERLIN, GERMAN Y, ASSIGNOR TO DEUTSCHE GASGLlj'HLICHT AKTIENGESELLSCHAFT (AUEBGESELLSCHAFT), F BERLIN, GERMANY, A CORPORA- "SIGN OF GERMANY.

GAS-BURNER.

My invention relates to gas burners more particularly of the kind used'in-con nectiou with upright incandescent gas lambs and has for its object to utilize for instance for" reheetin urmses the heat which is conducted to the metal by radiation instead oi permitting-said heat to become lost. The

present structure is sn'improvcment on the invention-forming the subject matter of my pending application Serial No. 53457]; filed December 23,1909.

My present invention will be fully de scribed hereinafter and the features oi novelty will be pointed out in the appended ciuims.

Reference is' to be had to the accompany ing drawings in Which- Fignre 1 is a vertical section of my inc-- proved burner, Fig. .2. is e ple'n View thereof and is u horizontal section on the iiue :33 of Fig. 1.

In the drawings the burner comprises a burner tube a which extends axially into a second tube 7) of larger dizuneter so to leave an annular space 0 between said tubes (1 and Z). The :tree and of the tube a is preferably covered by means of u sieve d or analoggus structure in the customary manner its shown in the drawings, the tubeb is shorter than the tube a and. extends upwardly from thebottoin thereof, the two tubes being sec-med together by means of thin tint rings c located adjacent to the op posits ends of said tube Z) and bridging the annular space 0. This space is thus in the nature oi: a chamber closed at opposite ends by suid'i'ings The usual chimney sup porting gallery f is secured to the two i; by means of supporting members g so as to be carried thereby.

.l. he tube Z) arranged to extend into one end. of s nozzle tube it provided with apertures i for the admission of air and internally screw threaded. for connection. with the usual nozzle 3 A head or other projection is preferably provided at 9. suitable point on the tube 6 to limit the inward movement thereof relatively to the nozzle tube It.

Specification of Letters Patent.

Patented Oct. 17, 1911.

Application filed utvenit i a, 1510. serial No. 590,787.

With this construction therefore the burner tube does not, as usual, surround the nozzle tube but isinserted into the same as described. Inthis Way" the mixture of air and gasis in direct touch with the burner tube a heatedfrom' the :flzune byradiction end conduction so that all the heat will be utilized in a most economical way to preheat the mixture. The nozzle 3' is arranged to be connected'to the customary fixture in the well known way.

With my improved construction as described'an sir chamber is formed between the tubes a and b so that an air cushion or insulation enyelops the iower portion of the burnertube o and prevents the heutfrom being conducted from the burned tube a to the tube 5. As the burner tube a with this arrangement is also maintained but ofcontect with. the nozzle tube-1 2., Whichis only engaged by the tube Z), the said envelop or insulation of air also prevents the heat from being conducted to said nozzle tube which thus ciiectually protected. The thin. fiat rings e are of such small dimensions that practically heat is conducted by them" from one tube to another; The said envelop or insulation of air thus prevents the heat from becoming lost andserves to retain said beet in the interior of the burner tube where said heat contacts with the mixture oi air and gas and serves to eii'ectuelly preheat said mixturc'be'fore it reaches the point of consumption. By supporting the chimney gallery on the tube Z2 this gallery also insulated. This is of great advantage the heat which is conducted down the inside of the burner tube by the home will not heat the gallery so that the radiated heat will not be lost and the gallery I'GIHEtlXIS cool. The heat conducted to the gallery. f by rudiution from the fizune and conducted from the chimney is thoroughly utilized for preheating the secondary air. In other Words by avoiding all contact between the burnertube a with the gallery 1 all the heat rudiating from the flame and conducted from the Home through the burner tube a instead of being lost as usual by radiation from the large surface of the gallery, will, by radiation and conduction from the flame and from the chimney to the gallery, preheat the secondary air admitted from the bottom through the gallery.

A very cheap and efiicient structure is socured with my improved structure, which is also very light owing to the absence of any lnsulating material. In this improved structure the air in the chamber 0 forn'i's a perfect insulatmg medium which surrounds the lower portion of the burner tube a.

- The burner tube a instead of being fixed in the tube 5 may be removably secured therein.

Various changes in the specific construction shown and described may be made Within the scope of theclaims Without departing from the spirit of my invention.

I claim:

a 1. In a gas burner a nozzle tube, a burner tube extending into said nozzle tube and means connected with said burner tube and arranged to form therewith an insulating air chamber adapted to insulate said nozzle tube against heat ellects.

2. In a gas burner a nozzle tube and a plurality of tubes extending into said nozzle tube and spaced from each other to form an air space for insulating said nozzle tube against heat effects. I

3. In a gas burner a nozzle tube, a tube extending into said nozzle tube and a burner tube having a portion secured in and extending into said second tube, said inwardly extending portion being of smaller diameter than said second tube and spaced therefrom to form an air space for insulating said nozzle tube against heat efiects;

4. In a gas burner, a nozzle tube, a .burner tube,a tube spaced from and surrouhding a portion of said burner tube and adapted to extend into said nozzle tube and a chimney gallery carried by said last named tube. 5; In a gas burner, a nozzle tube, a burner tube having a portion extending into and of a smaller diameter than said nozzle tube so as to form anair space around said inwardly extending portion and means connected with said burner tube for supporting it on said nozzle tube.

In testimony whereof I have hereunto set my hand in the presence of two subscribing 

